A Cook County jury awarded just over $33,000 to a former railroad supervisor who sustained a back injury from slipping on ice and snow at a rail yard.Jurors tallied $66,150 in damages, which was reduced to $33,075 after they found plaintiff Jose Velasco was 50 percent at fault.The verdict was reached last Wednesday after a two-week trial before Circuit Judge Ronald F. Bartkowicz.On Feb. 9, 2015, Velasco, then a trainmaster …